Safety-pin.



L. c. COLLINS.

SAFETY PIN.

APPLICATION FILED MAR. 20,1915- 1,175,608. Patented Mar. 14, 1916.

Egg 1 3 warren sra'rns ra'rnivr entree.

LEON C. COLLINS, OF REVERE, MASSACHUSETTS, ASSIGNOR OF TWO-THIRDS TO CHARLES WAGNER, OF BOSTON, MASSACHUSETTS.

SAFETY-PIN.

Specification of Letters Patent.

Patented Mar. 14, 1916.

To all whom it may concern Be it known that I, LEON C. COLLINS, of Revere, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Safety-Pins, of which the following is a specification.

This invention is an improved safety pin of the self-locking type.

One of the objects of the invention is to provide a safety pin with means for locking the pin member in closed position, to prevent the same from pulling out of, or being accidentally withdrawn from the fabric with which it is engaged.

A further object is to provide an improved locking device for a safety pin which will positively lock the pin member, and so constructed that it will not in any manner interfere with the normal functions of the device.

A further object is to provide means for rendering the self-locking functions practically automatic, by providing a guide which will direct the pin member into engagement with the locking element, as the pointed end of the pin member moves away from the body of the safety pin, under the influence of the normal spring tension.

The invention will be hereinafter fully set forth and particularly pointed out in the claims.

In the accompanying drawing :Figures 1 and 2 are opposite side views of a safety pin constructed in accordance with my invention. Fig. 8 is a transverse sectional view on the line 3-3, Fig. 1. Fig. 4. is an enlarged detail view illustrating the locking device. Fig. 5 is an enlarged detailview of the pin member. Fig. 6 is a cross section thereof on the line 6-6 Fig. 5.

Referring to the drawing, the invention is illustrated in the form of a safety pin made of a single piece of wire possessing the required resiliency, shaped to form the body portion 10, the wire at one end of said body portion being bent at right angles, as indicated at 11, and then turned back into approximate U-shape, as indicated at 12, to form one side of a guard. The other side "of the guard is formed by bending the wire transversely, as indicated-at 13, and then back toward the body portion 10, to form a coil 14, the end or extremity of the coil being bent inwardly toward the body portion to form a locking pin or projection 15. The coil 14 forms the open side of the guard, and

said coil 14 and the U-shaped portion 12, are arranged to converge toward the transverse portion 18, the locking pin or project on 15 being located midway between the sides of the guard thus provided.

The pin member 16 is illustrated as formed integrally with the body portion 10, the wire forming the pin member and body being coiled at 17 provide the desired resilience. Said pin member is provided with the usual pointed end, and near said end a hole 18 is provided, to receive the pin or pro ection 15.

In practice, the improved safety pin, above described, is used in the ordinary and well known manner. IVhen it is desired to engage the same with a fabric, or the like, the pointed end of the pin member 16 is moved toward the body portion 10, until the pin member clears the lower edge of the coil 14-, whereupon a lateral movement will disengage the pin from the guard. It will be readily understood from the drawings, that quite a marked inward movement is necessary to disengage the pin member from the locking projection 15. After the pin member has been passed through the fabric, or otherwise employed, an inward pressure thereupon, sufiicient to clear the coil 14:, will permit the necessary lateral movement to bring the free end of the pin member in position to be engaged by the sides of the guard and, when the pin is released, said guard will direct the same so as to bring the locking projection 15 into engagement with the hole 18. By this arrangement the pin is firmly locked, and because of the distance that the pin member 16 must travel, before it may be disengaged from the locking projection 15, the said pin will not accidentally pull out of the fabric, unless positively moved to effect such disengagement. By converging the sides of the guard, the side shake of the pin is taken up, and as there is no end shake, the eye or hole 18 is automatically and accurately brought into engagement with the projection 15.

In order to prevent the threads of a fabric with which the safety pin may be engaged, from catching in the hole 18, or on either side thereof, it is preferred to provide the pin stem with grooves 19, commencing at the point of the pin stem and gradually tapering to nothing beyond the eye or hole 18, By making the eye or hole 18 of slightly less diameter than the distance between the sides of the groove, the threads of a fabric cannot fall down into the eye or engage the edges thereof, because the sides of the groove are higher than the edges of the eye. I

Having thus explained the nature of my invention, and described an operative man er of constructing and using the same, al-

though Without, attempting to set forth all of the forms in Which it may be made, or all of the forms of itsuse, What I claim is 1. A self locking safety pin comprising a main body portion formed of Wire, having a portion Which is bent into approximate U-shape and located on one side of themain body portion to form one side of a guard,

a coiled portion forming the other side of the guard and connected with the U-shaped portion by atransversely extended member, the extremity of the coiled portion extending toward the'main body portion, and located' opposite the same to form a locking projection, and a pin tongue havingan eye to receive said lockingprojection, an unobstructed space being locking projection. r 2. A self-locking safety pin comprising a. Wire bent at right angles to provide a main body portion, said Wire adjacent the said bent portion having a U-shaped portion exprovided between said main body portion and said tending up to one side of said main body portion to form one side of a guard, a coiled portion forming the other side of the guard 35 and connected With the U-shaped portion by a transversely extended member, the extremity of the coiled portion extending toward the main body portion, and located pin stem connected Withsaid body and provided With oppositely disposed longitudinal grooves, and also with an eye connecting said grooves, to receive said locking members, the diameter of said eye being less'than thewidth of the grooves.

I In testimony whereof signature in presence of tWo Witnesses.

LEON c. COLLINS. V

Witnesses 1 LEWIS A. CARPENTER, 7 GEORGE W. GALE.

Copies of'this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

- Washington, I). G.

1 have aflixed my 7 

